Throat for fastener-inserting machines.



s. A. DOBYNE. THROAT FOR PASTENER INSERTING MACHINES.

APPLICATION FILED JUNE 18, 1913.

Patented Mar. 24, 1914.

in I ion.

STEPHEN A. ZDOBYINE, OF ST. LOUIS, MISSOUBI, I ASSIGNOR T0 CHAMPION SHOEMACHINERY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

THROAT FOB FASTEliTER-INSERTING MACHINES.

Specification of Letters Patent.

- Original application filed March 18, 1912, Serial 1W0. 684,853.Divided and th'i's application filed June 15,

1913. Serial No. 774,379.

To all whom it may concern Be it known that I, STEPHEN A. DoBYNn, acitizen of the United States, and residing at St. Louis, in the State ofMissouri, have invented certainnew and useful Improvements in Throats'for Fa stener-Tnserting .Machines, of which the following is aspecification.

This invention relates to throats for fastenerinserting machines andthis application is a division of application Serial No. (384,653,filedMarch 18, 1912.

One of the objects of this invention is to provide means for guiding thefastener While passing through the throat and whlle being driven so asto support the same against lateral movement while being driven into thematerial.

Further objects will appear from the de tail description taken inconnection with the accompanying drawing in which:

Figure l'is a detail frontelevation of a fastener inserting jmachine,showing the novel throat, Fig. 2 is a detail section on the line 2 Fig.1, Fig. 3 is a section on the line 3 -3 Fig. 2, Fig. 4 is a detailperspective view of the die, and Figs. 5, 6, 7 and 8 are diagrammaticalviews illustrating the mechanism for guiding the being driven. U I

Referring to the accompanying drawing, 15 designates a machine head, lid2. driver, 21 a throat, 23 a fastener stock guide, 25 a cutter, and 28an awl, the parts being arranged as shown in the application referredto.

The throat is provided with a removable die 36 having a positioningdowel 37 and clamped to the throat by means of a screw 38. This die isbowed upwardly at its center with respect to the throat as shown in F1g.4 so that when clamped in position, the cutting end will be clampedfirmly against the throat. The cutting edge is. beveled and undercut asshown in Fig. 3.

The throat is channeled as shown in Figs. 1 and 2 and has mountedthereon a guide member 39 which is pivoted at its upper end by means ofa screw 40 passing through an elongated slot in the guide member. Thisguide member has a fin projecting into the driver passage, and this finis formed as shown in Figs. 3 to 8 inclusive, with anupper 1nclinedportion 41, an intermediate substantially vertical portion 42, and alower 1nfastener while 'clined portion 43, forming together a series ofsteps. A plunger 44 mounted in a tubular bore 45 bears against themember 89 andv is pressedthereagainst by means of a spring 1 46 on theshank 47. The throat body is provided with a shoulder 48 forming anabutment for the head of the plunger 44, and this plunger and itstubular casing are bo1ted to the throat by means of a screw 49. Y

The guide member can be readily removed by removing the screw 40 whenthe guide member can be pushed downwardly out of its a channel. Theshoulder 48 limits the movement of the plunger when the guide member isremoved. The fin and the spring plunger, the spring of which iscomparatively strong, operate to retain the guide connection and itsfree end. The construe tion of the fin is such that it will constantlyand at all times bear against two separated points of the head side ofthe string nail during practically the entire passage of thisnailthrough the driver passage,'and this engagement is at the head and apoint on the shank ofthe nail. The nail will thus be held firmly withits flat and straight side against the straight vertical wall of thedriver passage. This engagement of the guide member with the nail" at aplurality of separated points along its length is continued until thenail projects a considerable distance beyond the throat, as shown inFig. 8, and until the nail has entered the material for a considerabledistance. the nail is projected through the throat and into thematerial. the nail is thus firmly supported at both the head and theshank, as shown in Figs. 7 and 8, so that the nail cannot move laterallyat this time. The nail is thus supported against'transverse movementduring its entire passage through the throat and until it is practicallydriven. This'results in a uniform drive and prevents the nail fromturning, bending or curling while passing into and through the material.

It is obvious that various changes may member in position in the throateven when While be made in the details of construction withlength duringsubstantially its entire passage through said driver passage as it isbeing driven therethrough.

2. In a fastener inserting machine, a

throat having a driver passage provided vwith a straight wallconstructed to guide the straight side of a headed fastener, and meansin sald driver (passage constructed and arranged to yiel ingly engagethe head side of the fastener at a plurality of separatedpoints alongits length, and yieldingly hold it against sald wall and againsttransverse movement during substantially its entire passage through saiddriver passage as it is being driven therethrough.

3. .In a, fastener inserting machine, a throat having a driver passageprovided with a straight wall constructed to guide the straight side ofa headed fastener, and means in said driver passage constructed andarranged to yieldingly engage both the I stantially the .entire passagethrough said driver passage as it is being driven there-' head and shankof the fastener during subthrough.

4. In a fastener inserting machine, a throat having a driver passage, amember in said driver assage constructed and arranged to yielding engageand guide a fastener, and means or supporting said member constructedtopermit both of its ends to move independently toward and from theopposite wall of the driver pas sage, said member being. constructed andarranged to ieldingly engage and support a fastener against transversemovement at a'plurality of separated points along its len 11 duringsubstantially.-

its entire passage t rough said driver passage as it is being driventherethrough.

5. In a fastener inserting machine, ,a throat having a driver passagefor a headed fastener, a member in said driver passage constructed andarranged to yieldingly endriver gage the head and shank of the fastener,

and means for supporting said member con:

structed to permit said member to automatically adjust itself to thefastener as it passes passage.

6. In a fastener inserting machine, a throat having a driver passage,amember in said driver passage, and means for pivotally supporting saidmember at one end con-' structed to permit movement of said memher atits pivot toward and from the opposite driver passage wall, and a springbearin against said memberbetween its ends, sai member-being constructedand arranged to yieldingly engage and support a fastener againsttransverse movementat a plurality of separated points along its lengthduring substantiallyits entire passage through said passage as it isbeing driven therethroug 7. In a machine of the class described, athroat havin a driver passage, a fastener guiding mem er removablymounted in said throat, a spring pressed plunger bearing against saidguiding member, and. a stop for limiting the movement of said plungerwhen said guiding member is removed.

8. In a machine of the class described, a throat having a driverpassage,'and a recess adjacent said driver passage, a fastener guidingmember removably mounted in said recess and having a fin-projecting intosaid driver passage, a. spring pressed plunger bearing against saidguiding member, and a stop for limiting the movement of said plungerwhen said guidin member is removed.

9. In a machine 0 the class described, a throat having a driver passageand a recess adjacent said driver passage, a fastener guiding membermounted insaid recess and having a fin projecting into said driverpassage, and a spring bearing against said guidmg member, saidguidinmember being retained frictionally in posltion in said throat by saidfin and spring and being endwise removable therefrom.

- In testimony whereof I afiix my signature in the presence of these twowitnesses.

' STEPHEN A. DOBYNE. Witnesses:

EDNA E. MEYER, P. A. BARLOW.

